2163125 has 10 divisors (see below), whose sum is σ = 2703822. Its totient is φ = 1730000.

The previous prime is 2163113. The next prime is 2163137. The reversal of 2163125 is 5213612.

It is an interprime number because it is at equal distance from previous prime (2163113) and next prime (2163137).

It can be written as a sum of positive squares in 5 ways, for example, as 1196836 + 966289 = 1094^2 + 983^2 .

It is not a de Polignac number, because 2163125 - 2⁸ = 2162869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2163097 and 2163106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1106 + ... + 2355.

2^2163125 is an apocalyptic number.

2163125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2163125 is a deficient number, since it is larger than the sum of its proper divisors (540697).

2163125 is an frugal number, since it uses more digits than its factorization.

2163125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481 (or 3466 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 2163125 is about 1470.7566080083. The cubic root of 2163125 is about 129.3283903296.

Adding to 2163125 its reverse (5213612), we get a palindrome (7376737).

The spelling of 2163125 in words is "two million, one hundred sixty-three thousand, one hundred twenty-five".